drm_atomic_h...epare_planes(9)

📦 version 7.3.1, in nixpkgs unstable

💅 drm_atomic_h...epare_planes(9) — Kernel API Manual, bestie edition ✨

okay so bestie, welcome to the kernel API manual for drm_atomic_h...epare_planes(9) — yes the title is truncated with those three dots, that's just how it's printed in the manual header, we don't question the kernel's choices 💀

🌸 NAME 🌸

drm_atomic_helper_prepare_planes — the function that gets your plane resources all prepped and cute before the commit happens 🎀

✨ SYNOPSIS ✨

int drm_atomic_helper_prepare_planes (struct drm_device *dev , struct
drm_atomic_commit *state );

like literally that's the whole signature, go off king 👑

🦋 ARGUMENTS 🦋

  • dev — the DRM device. the main character of this whole operation 💖
  • state — the atomic state object, and it's holding all the new state structures. fresh fits only, no hand-me-downs 🎀

🧚 DESCRIPTION 🧚

okay so here's the vibe: this function prepares plane state — and specifically framebuffers — for the new configuration ✨ it does this by calling drm_plane_helper_funcs.prepare_fb. that's the whole assignment, that's what she does 💅

but here's the part where she's actually a good friend 🫶 — if any failure happens along the way, she doesn't just bail and leave a mess everywhere. nope. she calls drm_plane_helper_funcs.cleanup_fb on any framebuffer that already got successfully prepared. so like, she cleans up after herself. growth. we love to see it. 🔥

ngl this is the whole point — prepare everything, and if it goes sideways, undo the parts that already worked so you don't leak stuff everywhere 😭

⭐ RETURN ⭐

  • 0 on success 🎉
  • a negative error code on failure 😭

🌈 SEE ALSO 🌈

bestie this list is long, but every single one of these is getting its moment, no skipping, no cap 💀

and that's the whole page, bestie 🫶 this one lives in ./drivers/gpu/drm, dated October 2026, and it's filed under the manual name drm_atomic_h...epare_planes(9) — go prep those planes, you absolute icon 👑✨

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